<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	
	<body>
		<iframe src="page1.html" width="100%" height="150px"></iframe>
		<iframe src="page2.html" width="19.5%" height="500px" style="float: left;"></iframe>
		<iframe src="page3.html" width="80%" height="500px"></iframe>
	</body>
</html>